Comment 10 for bug 1553147

The problem still (or again) exists in at least Ubuntu Trusty, Xenial and Artful. None of these Ubuntu versions show any reaction on trying to set the keyboard layout.

Tried NO:
d-i console-setup/ask_detect false
d-i keyboard-configuration/layoutcode string no
d-i keyboard-configuration/layout select Norwegian
d-i keyboard-configuration/modelcode string pc105

Tried DE:
d-i console-setup/ask_detect false
d-i keyboard-configuration/layoutcode string de
d-i keyboard-configuration/layout select German
d-i keyboard-configuration/modelcode string pc105

The result is always US keyboard layout in /etc/default/keyboard:
XKBMODEL="pc105"
XKBLAYOUT=""
XKBVARIANT=""
XKBOPTIONS=""
BACKSPACE="guess"